/Engine/Source/Runtime/SlateCore/Public/Widgets/DeclarativeSyntaxSupport.h
Add metadata to this widget - convenience method - 2 arguments
template<typename MetaDataType, typename Arg0Type, typename Arg1Type> [WidgetArgsType](API\Runtime\SlateCore\Widgets\TSlateBaseNamedArgs\WidgetArgsType) & AddMetaData ( Arg0Type InArg0, Arg1Type InArg1 )